Implement kvm_arch_vcpu_async_ioctl() "natively" in x86 and arm64 instead of relying on an #ifdef'd stub, and drop HAVE_KVM_VCPU_ASYNC_IOCTL in anticipation of using the API on x86. Once x86 uses the API, providing a stub for one architecture and having all other architectures opt-in requires more code than simply implementing the API in the lone holdout. Eliminating the Kconfig will also reduce churn if the API is renamed in the future (spoiler alert). No functional change intended. Acked-by: Claudio Imbrenda Signed-off-by: Sean Christopherson --- arch/arm64/kvm/arm.c | 6 ++++++ arch/loongarch/kvm/Kconfig | 1 - arch/mips/kvm/Kconfig | 1 - arch/powerpc/kvm/Kconfig | 1 - arch/riscv/kvm/Kconfig | 1 - arch/s390/kvm/Kconfig | 1 - arch/x86/kvm/x86.c | 6 ++++++ include/linux/kvm_host.h | 10 ---------- virt/kvm/Kconfig | 3 --- 9 files changed, 12 insertions(+), 18 deletions(-) diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 870953b4a8a7..ef5bf57f79b7 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -1835,6 +1835,12 @@ long kvm_arch_vcpu_ioctl(struct file *filp, return r; } +long kvm_arch_vcpu_async_ioctl(struct file *filp, unsigned int ioctl, + unsigned long arg) +{ + return -ENOIOCTLCMD; +} + void kvm_arch_sync_dirty_log(struct kvm *kvm, struct kvm_memory_slot *memslot) { diff --git a/arch/loongarch/kvm/Kconfig b/arch/loongarch/kvm/Kconfig index ae64bbdf83a7..ed4f724db774 100644 --- a/arch/loongarch/kvm/Kconfig +++ b/arch/loongarch/kvm/Kconfig @@ -25,7 +25,6 @@ config KVM select HAVE_KVM_IRQCHIP select HAVE_KVM_MSI select HAVE_KVM_READONLY_MEM - select HAVE_KVM_VCPU_ASYNC_IOCTL select KVM_COMMON select KVM_GENERIC_DIRTYLOG_READ_PROTECT select KVM_GENERIC_HARDWARE_ENABLING diff --git a/arch/mips/kvm/Kconfig b/arch/mips/kvm/Kconfig index ab57221fa4dd..cc13cc35f208 100644 --- a/arch/mips/kvm/Kconfig +++ b/arch/mips/kvm/Kconfig @@ -22,7 +22,6 @@ config KVM select EXPORT_UASM select KVM_COMMON select KVM_GENERIC_DIRTYLOG_READ_PROTECT - select HAVE_KVM_VCPU_ASYNC_IOCTL select KVM_MMIO select KVM_GENERIC_MMU_NOTIFIER select KVM_GENERIC_HARDWARE_ENABLING diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig index 2f2702c867f7..c9a2d50ff1b0 100644 --- a/arch/powerpc/kvm/Kconfig +++ b/arch/powerpc/kvm/Kconfig @@ -20,7 +20,6 @@ if VIRTUALIZATION config KVM bool select KVM_COMMON - select HAVE_KVM_VCPU_ASYNC_IOCTL select KVM_VFIO select HAVE_KVM_IRQ_BYPASS diff --git a/arch/riscv/kvm/Kconfig b/arch/riscv/kvm/Kconfig index c50328212917..77379f77840a 100644 --- a/arch/riscv/kvm/Kconfig +++ b/arch/riscv/kvm/Kconfig @@ -23,7 +23,6 @@ config KVM select HAVE_KVM_IRQCHIP select HAVE_KVM_IRQ_ROUTING select HAVE_KVM_MSI - select HAVE_KVM_VCPU_ASYNC_IOCTL select HAVE_KVM_READONLY_MEM select HAVE_KVM_DIRTY_RING_ACQ_REL select KVM_COMMON diff --git a/arch/s390/kvm/Kconfig b/arch/s390/kvm/Kconfig index cae908d64550..96d16028e8b7 100644 --- a/arch/s390/kvm/Kconfig +++ b/arch/s390/kvm/Kconfig @@ -20,7 +20,6 @@ config KVM def_tristate y prompt "Kernel-based Virtual Machine (KVM) support" select HAVE_KVM_CPU_RELAX_INTERCEPT - select HAVE_KVM_VCPU_ASYNC_IOCTL select KVM_ASYNC_PF select KVM_ASYNC_PF_SYNC select KVM_COMMON diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index b4b5d2d09634..ca5ba2caf314 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -7240,6 +7240,12 @@ static int kvm_vm_ioctl_set_clock(struct kvm *kvm, void __user *argp) return 0; } +long kvm_arch_vcpu_async_ioctl(struct file *filp, unsigned int ioctl, + unsigned long arg) +{ + return -ENOIOCTLCMD; +} + int kvm_arch_vm_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) { struct kvm *kvm = filp->private_data; diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 5bd76cf394fa..7186b2ae4b57 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -2437,18 +2437,8 @@ static inline bool kvm_arch_no_poll(struct kvm_vcpu *vcpu) } #endif /* CONFIG_HAVE_KVM_NO_POLL */ -#ifdef CONFIG_HAVE_KVM_VCPU_ASYNC_IOCTL long kvm_arch_vcpu_async_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg); -#else -static inline long kvm_arch_vcpu_async_ioctl(struct file *filp, - unsigned int ioctl, - unsigned long arg) -{ - return -ENOIOCTLCMD; -} -#endif /* CONFIG_HAVE_KVM_VCPU_ASYNC_IOCTL */ - void kvm_arch_guest_memory_reclaimed(struct kvm *kvm); #ifdef CONFIG_HAVE_KVM_VCPU_RUN_PID_CHANGE diff --git a/virt/kvm/Kconfig b/virt/kvm/Kconfig index 5f0015c5dd95..267c7369c765 100644 --- a/virt/kvm/Kconfig +++ b/virt/kvm/Kconfig @@ -78,9 +78,6 @@ config HAVE_KVM_IRQ_BYPASS tristate select IRQ_BYPASS_MANAGER -config HAVE_KVM_VCPU_ASYNC_IOCTL - bool - config HAVE_KVM_VCPU_RUN_PID_CHANGE bool -- 2.51.1.930.gacf6e81ea2-goog